Imperial War Museum - picture scanned by me
Ian Dunster 18:16, 15 November 2005 (UTC) from: Allied Secret Weapons a Purnell's History of the World Wars Special - Phoebus - 1975 - (No ISBN) and credited to: Imperial War Museum.
Imperial War Museum - picture scanned by me
Ian Dunster 18:16, 15 November 2005 (UTC) from: Allied Secret Weapons a Purnell's History of the World Wars Special - Phoebus - 1975 - (No ISBN) and credited to: Imperial War Museum.